document.write( "Question 973893: 1) What is the remainder when 2^31 is divided by 10?
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document.write( "2) What is the remainder when 2^69 is divided by 5?
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Algebra.Com's Answer #595922 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! 2 raised to a power goes 2,4,8,6 \n" ); document.write( "to the 9th power 512, then 1024, then 2048, 4096. \n" ); document.write( "Divide the exponent by 4 and see what is left over \n" ); document.write( "2^31 is 2^28 (which ends in 6). The next three end in 2,4,and 8. The remainder will be 8.\r \n" ); document.write( "\n" ); document.write( "2^69 will have 17 repeats of the pattern and will end in 2 for 2^69. The remainder will be 2, when divided by 5. \n" ); document.write( " |